Hospice nurse Stella prefers the night shift after Afghanistan left her veteran husband a changed man, haunted at night by memories he can't bring himself to share. Writing final letters for her hospice patients to their loved ones gives Stella the chance to help others communicate as she cannot. She only has one rule: she mails the letter only once her patient is no longer alive. When she meets a patient with a chance at redemption, she finds herself torn between respecting a dying woman's wishes and reuniting her with the son she abandoned years ago.